------------[ cut here ]------------
WARNING: CPU: 0 PID: 2796 at mm/userfaultfd.c:1706 move_pages+0x2b4/0x470 mm/userfaultfd.c:1706
Modules linked in:
CPU: 0 PID: 2796 Comm: syz-executor.0 Not tainted 6.8.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:move_pages+0x2b4/0x470 mm/userfaultfd.c:1706
Code: 44 24 10 4c 3b 78 08 76 2c 31 db 45 31 ff e9 af fe ff ff 90 0f 0b 90 4d 85 ff 0f 8e 53 ff ff ff 90 0f 0b 90 e9 56 ff ff ff 90 <0f> 0b 90 45 31 ff e9 48 fe ff ff 48 89 df 48 8b 74 24 08 48 8b 54
RSP: 0018:ffffc900013afd50 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 3eb26d79c4509b53 RSI: ffffffff82ead27e RDI: ffffffff82f0ae32
RBP: ffffffff8145cb92 R08: 0000000000000000 R09: ffff88810c3a51c0
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000200e2000
R13: ffff8881117be040 R14: 0000000020fff000 R15: 0000000000000000
FS:  00007f9a2cfce6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555555cbda8 CR3: 00000001118b4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 userfaultfd_move fs/userfaultfd.c:2008 [inline]
 userfaultfd_ioctl+0x3a0/0x2400 fs/userfaultfd.c:2126
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0x6e/0xc0 fs/ioctl.c:857
 do_syscall_64+0xe6/0x230
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f9a2d44cda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9a2cfce0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f9a2d57af80 RCX: 00007f9a2d44cda9
RDX: 0000000020000000 RSI: 00000000c028aa05 RDI: 0000000000000003
RBP: 00007f9a2d49947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f9a2d57af80 R15: 00007ffe86297568
 </TASK>